body {
    background: linear-gradient(135deg, #ffffff 0%, #ffffff 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.login-container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    animation: slideUp 0.5s ease;
}
@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
.login-header {
    text-align: center;
    margin-bottom: 2rem;
}
.login-logo {
    width: 120px;
    height: 70px;
    margin-bottom: 1rem;
    animation: fadeIn 1s ease;
}
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
.login-header h2 {
    color: #333;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.login-header p {
    color: #666;
    font-size: 0.9rem;
}
.form-floating {
    margin-bottom: 1rem;
}
.form-floating input {
    border-radius: 10px;
    border: 1px solid #ddd;
    padding: 1rem 0.75rem;
    height: auto;
}
.form-floating input:focus {
    border-color: #4a90e2;
    box-shadow: 0 0 0 0.2rem rgba(74,144,226,.25);
}
.form-floating label {
    padding: 1rem 0.75rem;
    color: #666;
}
.form-floating input:focus ~ label,
.form-floating input:not(:placeholder-shown) ~ label {
    color: #4a90e2;
}
.btn-login {
    width: 100%;
    padding: 0.8rem;
    border-radius: 10px;
    background: #4a90e2;
    border: none;
    color: white;
    font-weight: 500;
    margin-top: 1rem;
    transition: all 0.3s ease;
}
.btn-login:hover {
    background: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(74,144,226,0.3);
}
.btn-login:active {
    transform: translateY(0);
}
.error-message {
    color: #dc3545;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    text-align: center;
    display: none;
}
